I’ve got two USBs DRP driven by the MP2722. Both charge and discharge the same battery. I would like to use a single NTC on the battery. How I should connect the supply for the NTC circuit? Can I connect together the VRNTC or do I have to use OR logic for supply the NTC circuit? Maybe there is other solution that I don’t see.
All you would need to do to ensure your setup would be to ensure the NTC circuit is being properly supplied and the voltage levels are safe in accordance to what is specified in the MP2722 datasheet.
In general, if the two USB DRPs share the same voltage for the NTC circuit, then you can simply connect the NTC to that supply as seen . However, if there are different supplies for the NTC, then implementing OR logic or a common power rail would be ideal for your application.